$ git clone -n https://src.fedoraproject.org/rpms/libguess.git /var/lib/mock/f41-build-side-1-2793948-32698/root/chroot_tmpdir/scmroot/libguess
Cloning into '/var/lib/mock/f41-build-side-1-2793948-32698/root/chroot_tmpdir/scmroot/libguess'...
$ git fetch origin 48c6c05e5cf734f44aaf8014713daa6962efe995:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libguess
 * [new ref]         48c6c05e5cf734f44aaf8014713daa6962efe995 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48c6c05 Orphaned for 6+ weeks